Future Prime Minister of France, Lionel Jospin, joined the group in 1960 and remained an active member for over ten years.
Members temporarily reconstituted the group as the Trotskyist Organisation, but soon obtained a state order permitting the reformation of the OCI.
Despite attempts to expand the ICFI, the two sides developed opposing policies on many issues, including Arab nationalism - the OCI adopting a dual defeatist position in the Six-Day War.
The OCI left the ICFI in 1971, the Socialist Labour League accusing it of fetishing Trotsky's Transitional Programme over Marxist theory.
Dissenting members including Andre Langevin, Pedro Carrasquedo and Alexis Corbière were expelled by 1992, and the Current has since occupied a leading role in the Workers Party.